The distribution of alkaloids derived from tyrosine and anthranilic acid in
the Angiospermae is discussed. Their role in the development of chemotaxon
omic concepts in the subclasses: Magnoliiflorae, Ranunculiflorae, Caryophyl
liflorae and Rutiflorae sensu Dahlgren has been reviewed with particular re
ference to the contributions of Professor Robert Hegnauer. (C) 1999 Elsevie
r Science Ltd. All rights reserved.